procd: update to version 2020-01-04

procd: update to version 2020-01-04

Contains following changes:

 a5af33ce9a16 instance: strdup string attributes
 d2e8bf6ef7cf system: watchdog_set: fix misleading indentation
 9814807bd71c system: sysupgrade: fix possibly misleading error
 c7a2db3c1eb6 system: sysupgrade: rework firmware validation
 ea45c4a0f07c system: fix failing image validation due to EINTR
 4fde95506243 cmake: fix lookup of external libraries
 5ed190aae1b3 jail: remove accidentally added lines
 52c5c1980ba3 jail: set user and group inside jail
 3aa051b44177 system: sysupgrade: close input side of pipe before reading
 f47622e89c4d instance: Warn about unexpected number of parameters
 564ecdfd9cc4 instance: ujail: Fix allocated size for no_new_privs parameter
 7fb2e1dfa221 procd: simplify code in procd_inittab_run
 4a127c3c60af procd: replace exit(-1) with exit(EXIT_FAILURE)
 bc0a73eaad58 procd: add upgraded binary to .gitignore
 ba4c4dbbbd65 procd: add start-console support
 3e39fe539490 procd: shift arguments for askfirst only once
 5d6282906baf procd: skip respawn in case device disappeared
 d27949f12fd7 procd: guard fork_worker calls
 258aa04328a2 procd: Add cached and available to memory table
 8e9fb51fa66e procd: Switch to nanosleep
 c844ace9729a system: Fix possible integer overflows

Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Petr Štetiar <ynezz@true.cz>